has anyone tried a precision 5557sp turbo?
#1
has anyone tried a precision 5557sp turbo?
Just wanted to see if anyone has tried this turbo in comparison to a gt3071r. I am currently running the gt3071r and am looking to upgrade. I am interested in this turbo due to it's higher hp rating and have heard it spools as fast or faster. Also wondering if it would fit an absurdflow low mount v band manifold.
#7
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
Note that Garrett is releasing a GTX30 and a GTX35. You may want to look into that vs. the PT turbos. The garrett gtx series has billet wheels.
Also, tell us some about your build. I have a GT3071 as well. .86 trim
Also, tell us some about your build. I have a GT3071 as well. .86 trim
#8
car has built engine 84.5mm bore. wiseco pistons, carillo rods, 99 head with 1mm oversize supertech valves, supertech valve springs and retainers.old style begi turbo manifold customized to fit t3 and adapted to fit a tial 44mm ewg. custom 3" downpipe. begi cast intake manifold with mustang 70mm tb. precision large front mount with custom 2.5" plumbing. 50mm tial bov. m-tuned coolant reroute. precision gt3071r with e compressor housing and .63 a/r turbine housing. aem ems. 1000cc injector dynamics injectors. stock coils with magnacore wires and denso iridium plugs. there's probably something i'm leaving out.
#9
oh yeah just put on an ati damper. clutch is act extreme pressure plate and clutch master 4 puck sprung hub disc. just got everything back together after rebuilding. still breaking in the new engine. hope to have dyno results soon. looking for 450 or more on pump gas. was making 392 on pump with blown head gasket and 80 psi compression on cyl 2&3.
#10
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
oh yeah just put on an ati damper. clutch is act extreme pressure plate and clutch master 4 puck sprung hub disc. just got everything back together after rebuilding. still breaking in the new engine. hope to have dyno results soon. looking for 450 or more on pump gas. was making 392 on pump with blown head gasket and 80 psi compression on cyl 2&3.
Our builds sound fairly similar. What psi got you to 392hp?
#17
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
1.8 fwd bp in an mx-3. Stock, cryo treated internals, megasquirt, full race ramhorn, 3in exhaust etc. Haven't dyno'd it yet because i'm waiting on bigger injectors, but i maxed out my 550 cc injectors at 14lbs, so probably low 300's. According to datalogs i'm @ 10lbs around 4500 rpm.
Too bad precision doesn't publish compressor maps.